Phil mentions the accident reports which are being put on line at the
Railways Archive - working my way forward from circa 1850 there are several recurring "incidents" which might be considered as "themes":-
1/ how little consideration had been given to the running of the system as an unified whole - even within areas as small as a town station... railway time had only just been established as a necessary measure and the absence of interlocking leading to contradictory movements within station limits;
2/ being able to fast forward for selected incidents (using the search filters) illustrates how the generic railway was developing in terms of process and technology... for example:- iron rails in 15' lengths
or shorter circa 1855 has become steel rails in 21'... 24'... and even 30' lengths by 1880 as the steel industry developed to meet the demands of the railways (reacting to the demands of heavier stock as a result of greater traffic demands);
3/ long and un-social hours for those at the "coal face" with the ever-present risk of injury.
Returning to the subject of this thread, here is a photo which depicts track that has a "sparse" nature to the sleepering as depicted in the post from Fraser earlier in the topic.
I am not able to credit this image... if anyone can oblige then I shall be pleased to add an acknowledgement.